0 of 3 questions completed
Questions:
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading…
You must sign in or sign up to start the quiz.
You must first complete the following:
0 of 3 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Average score |
|
Your score |
|
A 0.42 gram sample of acetylsalicylic acid (C9H8O4, aspirin) is crushed and dissolved in water. The sample is titrated with 0.160 M sodium hydroxide. The titration required an average volume of 12.50 ml of sodium hydroxide to reach the
The purity of the sample
A sample containing Al2O3 and Na2Cr2O72H2O was brought into the laboratory for analysis. The analyst heated a 2.2846 gram sample of this material to 100 °C for one hour, at which time only Al2O3 and Na2Cr2O7 remained. This mixture was found to weigh 2.2312 grams. Calculate the percent chromium in the sample.
In gravimetric analysis, the ideal product should be